<pre>  /**
   * The constants used in this Content Widget.
   */
  public static interface CwConstants extends Constants {
    String cwDatePickerBoxLabel();

    String cwDatePickerDescription();

    String cwDatePickerLabel();

    String cwDatePickerName();
  }

  /**
   * An instance of the constants.
   */
  private final CwConstants constants;

  /**
   * Initialize this example.
   */
  @SuppressWarnings("deprecation")
  @Override
  public Widget onInitialize() {
    // Create a basic date picker
    DatePicker datePicker = new DatePicker();
    final Label text = new Label();

    // Set the value in the text box when the user selects a date
    datePicker.addValueChangeHandler(new ValueChangeHandler&lt;Date&gt;() {
      public void onValueChange(ValueChangeEvent&lt;Date&gt; event) {
        Date date = event.getValue();
        String dateString = DateTimeFormat.getMediumDateFormat().format(date);
        text.setText(dateString);
      }
    });

    // Set the default value
    datePicker.setValue(new Date(), true);

    // Create a DateBox
    DateTimeFormat dateFormat = DateTimeFormat.getLongDateFormat();
    DateBox dateBox = new DateBox();
    dateBox.setFormat(new DateBox.DefaultFormat(dateFormat));

    // Combine the widgets into a panel and return them
    VerticalPanel vPanel = new VerticalPanel();
    vPanel.add(new HTML(constants.cwDatePickerLabel()));
    vPanel.add(text);
    vPanel.add(datePicker);
    vPanel.add(new HTML(constants.cwDatePickerBoxLabel()));
    vPanel.add(dateBox);
    return vPanel;
  }

</pre>